OutputStreamWriter write(int) in Java

write(int): This method is available in the java.io.OutputStreamWriter class of Java.

Syntax:

void java.io.OutputStreamWriter.write(int c) throws IOException

This method takes one argument. This method writes a single character.

Parameters: One parameter is required for this method.

c: int specifying a character to be written.

Returns: NA

Throws:

IOException - If an I/O error occurs

Approach 1: When no exception

Java

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

public class OutputStreamWriterwrite {
    public static void main(String[] args) throws IOException {

        OutputStream out = new FileOutputStream("D:\\hello.txt");
        OutputStreamWriter outputStreamWriter = new OutputStreamWriter(out);

        int c = 'a';
        outputStreamWriter.write(c);
        System.out.println("Successfully writes");
        outputStreamWriter.close();
    }
}

Output:

Successfully writes

Approach 2: IOException 

Java

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

public class OutputStreamWriterwrite {
    public static void main(String[] args) throws IOException {

        OutputStream out = new FileOutputStream("D:\\hello.txt");
        OutputStreamWriter outputStreamWriter = 
                                new OutputStreamWriter(out);

        int c = 'a';
        outputStreamWriter.close();
        outputStreamWriter.write(c);
        System.out.println("Successfully writes");

    }
}

Output:

Exception in thread "main" java.io.IOException: Stream closed
	at java.base/sun.nio.cs.StreamEncoder.ensureOpen(StreamEncoder.java:51)
	at java.base/sun.nio.cs.StreamEncoder.write(StreamEncoder.java:124)
	at java.base/sun.nio.cs.StreamEncoder.write(StreamEncoder.java:119)
	at java.base/java.io.OutputStreamWriter.write(OutputStreamWriter.java:190)
	at com.OutputStreamWriter.OutputStreamWriterwrite.main(OutputStreamWriterwrite.java:16)

Some other methods of OutputStreamWriter

close(): This method closes the stream, flushing it first.

flush(): This method flushes the stream.

getEncoding(): This method returns the name of the character encoding being used by this stream.

OutputStreamWriter(OutputStream): This method creates an OutputStreamWriter that uses the default character encoding.

OutputStreamWriter(OutputStream, Charset): This method creates an OutputStreamWriter that uses the given charset.

OutputStreamWriter(OutputStream, CharsetEncoder): This method creates an OutputStreamWriter that uses the given charset encoder.

OutputStreamWriter(OutputStream, String): This method creates an OutputStreamWriter that uses the named charset.

write(int): This method writes a single character.

write(char[], int, int): This method writes a portion of an array of characters.

write(String, int, int): This method writes a portion of a string.